电液位置伺服系统的频域设限加权切换控制

中国机械工程

电液位置伺服系统的频域设限加权切换控制

陈刚1, 2;曹赛2;王益群1, 2;赵团民3

1.燕山大学国家冷轧板带装备及工艺工程技术研究中心,秦皇岛,066004
2.燕山大学机械工程学院,秦皇岛,066004
3.中国重型机械研究院股份公司板带轧制装备研究所,西安,710032

出版日期:2017-09-10 发布日期:2017-09-07
基金资助:
国家自然科学基金资助项目（51305389）；
国家冷轧板带装备及工艺工程技术研究中心开放课题（005004）；
国家智能制造专项（发改办高技\[2014\]2558）；
河北省高等学校创新团队领军人才培育计划资助项目（LJRC013)
National Natural Science Foundation of China （No. 51305389）

Finite Frequency Domain Weighting Switching Control of an Electro-hydraulic Position Control System

CHEN Gang1,2;CAO Sai2;WANG Yiqun1,2;ZHAO Tuanmin3

1.Yanshan University National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Qinhuangdao,Hebei,066004
2.Institute of Mechanical Engineering, Yanshan University, Qinhuangdao,Hebei,066004
3.Institute of Strip Rolling Equipment, China National Heavy Machinery Research Institute Co., Ltd., Xi'an,710032

Online:2017-09-10 Published:2017-09-07
Supported by:
National Natural Science Foundation of China （No. 51305389）

摘要/Abstract

摘要： 分析电液位置伺服系统二阶状态反馈(DOSF)控制系统存在静差的机理，设计三阶无静差状态反馈(TOSF)控制器。为克服TOSF控制系统阶次高的缺陷，以切换频域设限加权算法实现TOSF-DOSF双控制器切换控制，切换频域设限减小了控制作用量对加权系数变化的灵敏度。仿真结果表明：电液位置伺服DOSF控制系统静差与负载弹性刚度正相关，TOSF控制系统能消除系统静差且符合动态性能设定。测试实验结果表明：TOSF-DOSF双控制器频域设限加权切换控制使系统具有良好的动静态性能，与阈值切换相比，具有较小的切换冲击。

关键词: 电液位置伺服, 状态反馈, 静差, 切换频域设限

Abstract: The mechanism of the double-order state feedback (DOSF) control system that had static errors was analyzed. A three-order state feedback (TOSF) controller without static errors was designed. To overcome the high order of TOSF control systems, a finite frequency domain weighting switching algorithm was adopted to realize TOSF-DOSF dual-controller switching control. The algorithm might reduce the sensitivity of control action on weighting coefficient changing. Simulations show that the static errors of electro-hydraulic position servo DOSF control system are positive correlation with load elastic stiffnesses and TOSF control system may eliminate static errors in conformity with dynamic performances. Experiments show that the system with TOSF-DOSF dual-controller finite frequency domain weighting switching control has good dynamic and static performances. It has smaller switching impacts compared with threshold switching.

Key words: electro-hydraulic position servo, state feedback, static error, switching in finite frequency domain

中图分类号:

TH137
TP278

陈刚1, 2;曹赛2;王益群1, 2;赵团民3. 电液位置伺服系统的频域设限加权切换控制[J]. 中国机械工程.

CHEN Gang1,2;CAO Sai2;WANG Yiqun1,2;ZHAO Tuanmin3. Finite Frequency Domain Weighting Switching Control of an Electro-hydraulic Position Control System[J]. China Mechanical Engineering.

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